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प्रश्न
Which of the following ions has the electronic configuration 3d6?
(Atomic number: Mn = 25, Co = 27, Ni = 28)
पर्याय
Ni3+
Co3+
Mn2+
Mn3+
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उत्तर
Co3+
Explanation:
Electronic configuration of Ni3+ = [Ar] 3d7, Co3+ = [Ar] 3d6, Mn3+ = [Ar] 3d4 and Mn2+ = [Ar] 3d5
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संबंधित प्रश्न
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| Example | Magnetic Moment (BM) |
| K2[MnCl4] | 5.9 |
How would you account for the following?
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Transition elements form binary compounds with halogens. Which of the following elements will form \[\ce{MF3}\] type compounds?
(i) \[\ce{Cr}\]
(ii) \[\ce{Co}\]
(iii) \[\ce{Cu}\]
(iv) \[\ce{Ni}\]
On the basis of the figure given below, answer the following questions:

- Why Manganese has lower melting point than Chromium?
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- In the third transition series, identify and name the metal with the highest melting point.
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Atomic sizes
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- Ti3+
- Cr2+
- Mn2+
- Fe2+
- Sc3+
Choose the most appropriate answer from the options given below:
